EP 0814253 A1 19971229 - Variable area nozzle for jet engine
Title (en)
Variable area nozzle for jet engine
Title (de)
Düse mit veränderlichem Strahlquerschnitt für Strahltriebwerke
Title (fr)
Tuyère d'éjection de turboréacteur, à géométrie variable
Publication
Application
Priority
FR 9607666 A 19960620
Abstract (en)
The nozzle consists of outer (6) and inner rings of shutters, the inner shutters being in two groups which lie in line and are articulated at their joints. Each ring of shutters has one group of controlled and another of follower shutters, with the forward controlled shutters connected to a control ring (12) which is moved axially by a series of control units (14). The control ring (12) is connected to the forward controlled shutters (8) by levers (17) which are pivoted at one end to the control units (14), and is connected to the rear controlled shutters (10) by servo-levers (20). The controlled shutters (6) of the outer ring are connected to the servo levers by arms (24) and are pivoted to a fixed structure joined to the fixed part of the engine. The control ring (12) is polygonal in shape, with the main and servo-lever pivots connected to its corners.
Abstract (fr)
L'invention concerne une tuyère d'éjection de turboréacteur, à géométrie variable, comprenant trois jeux de volets (6, 8, 10) axisymétriques, commandés par un seul anneau de commande (12) actionné par des vérins (14). Les volets commandés amont (8) sont reliés à l'anneau de commande (12) par des leviers translatables (14) sur lesquels sont articulés les vérins (14). L'anneau de commande (12) est en outre relié aux volets commandés aval (10) par des leviers d'asservissement (20) sur lesquels sont articulés les biellettes (24) d'entraînement des volets commandés (6) de la couronne extérieure, ces derniers volets (6) étant articulés sur la partie terminale fixe du turboréacteur. <IMAGE>
IPC 1-7
IPC 8 full level
F02K 1/12 (2006.01)
CPC (source: EP US)
F02K 1/1292 (2013.01 - EP US)
Citation (search report)
- [XA] EP 0091786 A1 19831019 - JONES THOMAS JOHN [GB], et al
- [X] FR 2715192 A1 19950721 - SNECMA [FR]
- [X] FR 2724977 A1 19960329 - SNECMA [FR]
- [X] GB 2254377 A 19921007 - ROLLS ROYCE [GB]
- [A] US 4141501 A 19790227 - NIGHTINGALE DOUGLAS J
- [A] FR 2714422 A1 19950630 - SNECMA [FR]
- [A] EP 0299832 A1 19890118 - SNECMA [FR]
- [A] US 2969189 A 19610124 - JORDAN JR HAROLD S
Designated contracting state (EPC)
DE ES FR GB
DOCDB simple family (publication)
EP 0814253 A1 19971229; EP 0814253 B1 20030820; CA 2207836 A1 19971220; CA 2207836 C 20031223; DE 69724191 D1 20030925; DE 69724191 T2 20040527; ES 2205148 T3 20040501; FR 2750167 A1 19971226; FR 2750167 B1 19980731; US 5934564 A 19990810
DOCDB simple family (application)
EP 97401407 A 19970619; CA 2207836 A 19970603; DE 69724191 T 19970619; ES 97401407 T 19970619; FR 9607666 A 19960620; US 87450797 A 19970613